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Friedrich Wilhelm Sertüner was a 20-year old pharmacist's apprentice when he made one of the great discoveries in the history of science: the first-ever isolation and purification of a chemical constituent from a plant, and the demonstration that this chemical carried with it the medicinal properties of the plant in concentrated form. With which plant and chemical did Sertüner work? Erythroxylum coca and cocaine Nicotiana tabacum and nicotine Coffea arabica and caffeine Lophophora williamsii (peyote cactus) and mescaline Papaver somniferum and morphine
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